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AI-Driven Software Engineer (Node.js & C++)

Hybrid in Madrid·Full-time·Added 5 days ago

Arsys

5 open roles

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Overview

Job details

Full-time hours
Per the ad.
Hybrid
Office and home days — the ad has the split.

Requirements

Have the right to work in Spain
Arsys doesn't mention sponsorship in the ad.
Work in English
English is required, per the ad.
Be near Madrid for hybrid days
No relocation package mentioned.

Pay & benefits

What you'll get

Hybrid work model (in any of our offices in Alcobendas, Valencia, Barcelona, Sevilla, or Logroño)
Flexible working hours
Flexible compensation package
Discounts on Arsys products
Discounts on technology brands
Challenging technical environment with real high-performance system problems
Access to advanced AI tools with no usage restrictions
Close collaboration with senior profiles and a strong culture of continuous improvement
Personalized training and development plans
Biannual team events

Requirements

What we're looking for

Strong experience with Node.js development
Ability to read, understand, and debug C++ code
Experience working in Linux environments
Familiarity with build tools and containers (Docker, Make, CMake)
Hands-on experience with AI-assisted development tools (e.g., Cursor, Claude, or similar)
Ability to use AI as a productivity multiplier in software development
Experience with iterative development, testing, and validation workflows
Strong English communication skills, as you will be working in an international team
Execution-driven mindset with strong focus on quality and results
Comfortable working in fast-paced environments
Strong interest in performance optimization and continuous improvement

The role

Act as the execution engine of the team, transforming architectural specifications into robust, efficient, and production-ready code. You will work on building and optimizing a hybrid Node.js-C++ system, leveraging AI tools as a key accelerator to maximize development speed without compromising quality.

What you'll do

Develop backend components in Node.js and high-performance integrations with C++
Translate technical specifications into functional solutions and accurately
Use AI tools to accelerate development, validation, and code improvement
Apply test-driven approaches to ensure robustness and stability
Manage and optimize build environments (Docker, Make, CMake)
Analyze system performance and identify bottlenecks, especially in Node.js ↔ C++ interactions
Refactor legacy code into clean, maintainable, and high-performance solutions
Collaborate closely with architecture roles to continuously improve the system

About Arsys

Arsys is a Spanish web hosting and cloud services provider headquartered in Logroño, Spain. Founded in 1998, the company offers domain registration, shared hosting, VPS, dedicated servers, and cloud infrastructure solutions to businesses and individuals, primarily in the Spanish and European markets. As part of the IONOS Group, one of Europe's leading hosting and cloud providers, Arsys benefits from significant scale and resources while maintaining its own brand and operations.

Arsys has a strong presence in Spain, with its main office in Logroño and additional operations in Madrid and Barcelona. The company is known for its engineering-driven culture, with a focus on Linux/Unix systems, DevOps practices, and network infrastructure. For international professionals, Arsys offers opportunities to work in a growing cloud and hosting environment, with roles often requiring English and offering the chance to work in a Spanish-speaking country. The company's integration with the IONOS Group provides access to a broader European tech ecosystem, making it an attractive option for those looking to relocate to Spain.

Industry: Web Hosting & Cloud
Founded: 1998
Employees: 500–1,000
Headquarters: Logroño, Spain
In Spain: Logroño, Madrid, Barcelona
Website: arsys.net

Good to know if you are moving

Arsys is part of the IONOS Group, one of Europe's largest hosting and cloud providers, offering a stable and well-resourced work environment.
The company's main office is in Logroño, a mid-sized city in northern Spain, which offers a lower cost of living compared to Madrid or Barcelona.
Open roles include engineering positions such as Linux/Unix System Engineer and Staff DevOps Engineer, indicating a strong technical focus.
The company uses Greenhouse for its job board, suggesting a modern and structured recruitment process.
Working at Arsys provides the opportunity to gain experience in a Spanish tech company while being part of a larger European group.

In their own words

About the company & team

We offer you the opportunity to join the leading Spanish company in the IT sector, with more than 25 years of experience and one of the most solid track records as a provider of technological solutions for companies.

We are a growing company with more than 400 employees and offices in Logroño, Madrid, Barcelona, Seville and Valencia.

Since August 2013, we have been part of the IONOS Group, Europe's leading digitalisation partner for small and medium-sized companies.

In short, we are a multicultural team that's passionate about technology, bringing our professional experience from over a dozen countries: Germany, Argentina, Spain, the United States, France, the Philippines, Italy, Poland, Portugal, the United Kingdom, Romania...

All open roles at Arsys